Nut-lock.



No.815,524. I PATENTED MAR.20, 1906.

J. B; GLENN.

NUT LOOK.

AP PLIOATION FILED JULY 24, 1905.

WWW

JOSEPH" GLENN, or DOTY, WASHINGTON.

I NUT-LOCK.

Specification of Letters Patent.

Patented March 20, 1906.,

Application liarauiy 24, 1905. Serial No. 271,047.

' To all whom it may concerm Be it known that I, JosEPH E. GLENN, a citizen of the United States, residing at Doty, in the county of Lewis and State of Washington, have invented certain new and useful Improvements in Nut-Locks; and I do hereby declare the following to be a full, clear, and exact description of the invention,- such as will enable others skilled in the art to I which it appertains to make and use the same.

My invention relates to nut-locks and its object is to provide a device of this character which is of simple construction and which will hold a nut securely in. place upon a bolt and prevent it from becoming loosened or accidentally detached.

Another object is to provide a lock which can be applied at either quarter-turn of the nut upon the bolt.

With the above and other objects in view the invention consists of a nut having a transversely-extending dovetail groove which is adapted to register with either of two intersecting grooves formed in the end of the z 5 bolt. A locking-strip having an enlarged head is adapted to beinserted into the dovetail groove of the nut and to be pressed into either of the grooves in the bolt. This locking-strip is provided at its center with lateral exten- 0 sions whereby the central portions of both grooves in the bolt will be engaged by the stri e invention also consists of other novel features of construction and combination of.

3 5 parts hereinafter more fully described, and

pointed out in the claims. In the accompanying drawings I have shown the referred form of my invention.

In said d fawings, Figure 1 is a perspective view showing a nut and bolt having my improved lock applied thereto. Fig. 2 is a side elevation of the bolt and showing the nut thereof in section. Fig. 3 is a section on line 3 3, Fig. 2; and Fig. 4 is a detail view of the locking-strip.

Referring to the figures by numerals of ref-' erence, 1 is a bolt of any suitable material and proportions and having in its threaded end intersecting grooves 2 and 3, which are of the same proportions and extend any desired distances into the bolt. A nut 4 is adapted to engage the bolt and has a transversely-extending dovetail groove 5 in its outer face, which is adapted after each quar- 5 5 ter-turn of the nut to register with each of the grooves 2 and 3. The nut-groove 5 is adaptstruction. This strip, as shown in Fig. 4, consists of a head 6, having beveled sides adapted to be inserted into and fit snugly within the dovetail groove 5. An extension 7 projects from the head 6 and has lateral arms 8 at the center thereof, said extension and arms being equal in width to the width of grooves 2 and 3. A lug or bead 9 is formed at the outer end ofhead 6 and is adapted to be enga ed by the end of the finger, so as to permit t e strip to be readily put into or out of lace. The entire strip is formed of mallea le metal, and therefore when it is desired to lock a nut upon a bolt it is merely necessary to turn the nut until the groove 5 re isters with one of the grooves 2 and 3.' he head 6 is then inserted into one end of groove 5 and strip 7 and arms .8 are bent into the j edto receive a. locking-strip of peculi-ar'congrooves 2 and 3, thereby holding the nut. and

bolt against independent movement. If it is desired to detach the nut, it is first necessary to bend the strip 7 out of the grooves2 and 3. I-Ieaad 9 can then be slid from groove 5, if desire It will be seen that this device is very simple and inexpensive in construction and constitutes a strong lock for holding a vnut in adjusted position upon a bolt. Nuts and bolts of ordinary construction can be readily grooved to receive the locking-strip.

In the foregoing description I have shown the referred form of my invention; but I do not limit myself thereto, as I am aware that modifications may be made therein without departing from the spirit or sacrificing the advantages thereof, and I therefore reserve the right to make such changes as fairly fall within the scope of my invention.-

Having thus fully described my invention,

what I claim as new, and desire to secure by Letters Patent, is

1. The combination with a bolt having grooves in one end; of a nut having a transverselyextending dovetail groove in one face, and a locking-stri detachably mounted within the groove in t e nut and comprising a head and an extension thereof having lateral proj ectin arms, said arms and extension being adapted tobe seated in the grooves in the bolt.

2. The combination with a bolt having intersecting grooves in one end; of a nut having a dovetail groove in one face adaptedto register with either of the'bolt-grooves, and a locking-strip detachably seated within the groove in the nut and engaging the Walls of sion and laterallyrojecting arms on the eX- said groove, said strip comprising a head tension and a bolt aving a groove in one end having a lug thereon, an extension, and lateradapted to receive the locking-strip. ally-projecting arms on the extension. In testimony whereof I have signed my 5 3. The combination With a nut having a name to this specification in the presence of [5 transverselyextending dovetail groove in two subscribing Witnesses.

one face thereof; a locking-strip detachably JOSEPH E. GLENN. mounted within and engaging the Walls of Witnesses:

the groove, said strip comprising a head hav- 1 WM. SPEAKER, 1o ing a projecting portion thereon, an exten- J. O. OSBORNE. 

